Gin rib



Dec. 30, 1930. J, J, WALLACE 1,786,972

G IN RIB Filed Oct. 9. 1929 2 Sheets-Sheet .1

Ei .4. 14 1s Dec. 30, 1930. J. J. WALLACE GIN RIB Filed Oct. 9, 1 929 2 Sheets-Sheet 2 gwuwntoz 1 11. Wailam Patented Dec. 30, 1930 i STA ES NT foFFicE JEFFREY JOHN WALLACE, or AMITE, LOUISIANA; Assrenoa To G'ULLETT GIN com PANY, or AMIT Lo IsIANA 1 l r GIN RIB Application filed October 9, 1929. Serial no. 398,492.

10 and soon cause the choking of the ginning spaces between the ribs which prevents the saws from operating efficiently. This is particularly true where the saws rotate at high speedand the motes and particles are thrown away from the saws by centrifugal force to the back of the ribs. It is the main object of this invention to provide a new type of cotton ginning ribs so shaped as to prevent the choking of the ginning spaces when the ribs are properly positioned on the rib bars of the machine.

Other objects of the invention will become apparent as the detailed description" thereof proceeds. I

In the drawings: Figure 1 is a side elevation of a ginning rib constructed according to the present invention and secured to rib bars which are shown in section taken on the line 11 of Figure 2, the scale in Figure 1 being reduced;

Figure 2 is a front elevation showing a number of the gin ribs secured to the bars of the gin;

Figure .3 is a section to an enlarged scale taken on the line 33 of Figure 1;

Figure 4: is a similar section taken on the line 4% of Figure 1;

Figure 5 is a section taken on the line 55.

ofFigure 1; r

Figure 6 is a section takenon the line 6-6 of Figure 1; and a Figure 7 is asection taken on the line 7-7 of Figure 1. I

As shown in the drawings, the gin ribs 1 are secured, at their upper ends, by'screws 2 to a barof wood 3 suitably fixed in a channel iron 4 forming the upper gin rail. The

cured by screws 5 to a wooden bar 6 suitably raillas indicated bythelineIG.

fixed in a channel'iron 7' forming the lower gin raili I I Theopposite ends of; each rib terminate in flat plates 8 and9, having their outside edges 10 and" 11 parallel to each other. These plates Sand 9 are of the'saine width so that when the ribs are arranged onthe rib bars, the adjacent' edges of the plates may be mounted in contact with each other antl'will properly space the curved parts of the ribs relativeto each other.

At the lower part ofthe ribs, the spaces 12 between adjacent ribs are substantially of the same width as arecthe spaces of the present type cotton gins. However, in order to revent motes and forei n articles to be thrownth'rough these spaces by the saws, the ribs -1 are gradually'tapered on their adj acent edges from bottom to top, so that the sp'a'ces13, at the points'where the upper part of. the saws intersect theribs, are substantially filled by thesaws x Each rib where itstarts from the bottom Y rail,is shaped substantially as shown in Figure 5, but the width 'of"the' back thereof 'is increasecL'as it rises toward the top rail, by flanges -14 and 15 extending from'the lower end of the rib. Each of the said flanges becomes wider as it approachesthe top rail, and is "terminated a 'short'distance' from the top The bodies "1? "of the ribs continue along the'plate 8 to' forn'1 sides 18 and -19,'whi'ch form with the 'adjacentsides of the adja-.

cent ribs a plurality of spaces to allow cotton to" escape out of the slot formed by the sides of the"adjacent ribs'near the top thereof. 1 9 Atlthe point20,'where the saw'21 intersects th'e ginfribs, the flanges 14 and 15 are square and are wider at this point than at any otherpoint. 1 Thisjfilling up of the spaces between the adjacent ribs prevents the motes and foreign particles fromleaving' the saws until the'saws have carried-thembeyond the back of the ribs; at which point they are free to be thrown from the saws without getting into'the space b'ackof the ribs. i 'Fron' ithe-line 22; passing through the points 20, theribbodies 17 taper slightly towardtheir' tops to allow any foreign substance ready relief in escaping out of the backof the ribs. From the same line the flanges 14 and 15 are slightly tapered toward the line 16 to allow cotton to escape outof the spaces or slots 13 as the roll turns in anti-clockwise direction in the roll box.

The wood bars 3 and 6 are flush with the edges of the'flangest and/T, which form therib rails of thegin. The plates 8 and9 are fastened tothese wood'bars as previous-. ly described, and have their under faces inmetallic contact with the adjacent flanges of the said rib rails In the operation of the gin, it will be evident that as the saws rotate freely through the wide spaces betweenthe lower ends of the gin ribs, they will carry up motes and foreign particles alongwith them, but these motes and particles will be prevented by the flanges 14 and 15 from escaping to the back of the ribs. The motes and particles willbe carried along these ribs'until they reach the points where the saws again intersectthe ribs and will there be engaged by-the teeth of the saws and thrown away from the back s of the ribs.

The inward tapering of the bodies 17 of the ribsfrom the points 20 toward the top tation in the roll box of the gin.

. named plate.

thereof allows any foreign substance to escape out to the back of theribs; and the continuation ofthesebodies along the plates 8 form recesses which provide additional clearances. The tapering of the flanges toward the line 16 also allows cotton to escape from the slots 13 as the :roll, turns in anti-clockwise roto .be attached to the rib' rails ofthe cotton gin and having an arcuate portion between said plates tapering in opposite directions including flanges projecting laterally from the body of therib, a rail engaging plate at the upper end of said rib,said flanges narrowing adjacent said rail to form with the adjacent -rib a relatively wide cotton discharging channel on the roll box side of said rib adjacent saidrail engagingplate. i

In testimony whereof Iaflix' my signature.

1 JEFFREY'JOHN WALLACE.

from a point between the center-of said p,01--, 7

tionand one of said plates, the oppositeedges of the back of said body being provided with flanges which diminish in width in, opposite directions from said point, the saidbody'extending partly overthe flatplate-adjacent the wideend of, the body, and said'fianges terminating ashort'distance from the last 2. A gin rib tapered widthwise from an ntermediate point so as toform in combination w-ithan adjacent similar rib a saw-channel narrow adjacent the upper part of the saw edge and relatively wide. adjacent the lower part of the sawedge, said ri b being a rmed-uwi huga fac on he rollgbox si e 

